"Its escaping to a kind of different world where I am just who I normally am anyway, and I can let that side, that sort of slightly immature, silly person come out a bit more than I normally do," he explained.

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Prince Harry (with his brother in Lesotho in 2010) established his own charity in 2006

Both Prince William and Prince Harry have thrown themselves into charitable projects in Africa.

Animal conservation is an issue they are both passionate about. The Duke is a patron of the elephant charity Tusk, while Prince Harry is a patron of Rhino Conservation Botswana.